Barack took to Twitter to share a statement from him and wife Michelle Obama to honor John‘s “patriotic obligation” to the United States.

“Few of us have been tested the way John once was, or required to show the kind of courage that he did,” the Obamas write. “But all of us can aspire to the courage to put the greater good about our own. At John’s best, he showed us what that means. And for that, we are all in his debt.”

Barack and John ran against each other in the Presidential Race back in 2008.

“My father’s passing comes with sorrow and grief for me, for my mother, for my brothers, and for my sisters,” Meghan writes. “He was a great fire who burned bright, and we lived in his light and warmth for so very long. We know that his flame lives on, in each of us. They days and years to come will not be the same without my dad – but they will be good days, filled with life and love, because of the example he lived for us.”

The 72-year-old President took to Twitter on Saturday (August 25) to send his love and respect to the late senator’s family.

“My deepest sympathies and respect go out to the family of Senator John McCain. Our hearts and prayers are with you!” Donald tweeted.

Donald and John have not always been big fans of each other. John crossed the Donald last year over the GOP attempt to repeal Obama’s Affordable Care Act, which John voted against. Donald once even said thatJohn was “not a war hero.”

John sadly passed away after his year-long battle with brain cancer.

My deepest sympathies and respect go out to the family of Senator John McCain. Our hearts and prayers are with you!

Senator John McCain has sadly passed away at his Arizona ranch with his family by his side on Saturday (August 25). He was 81-years-old.

The six-term United States senator from Arizona, 2008 Republican presidential nominee, and war hero has died after his year-long battle with brain cancer. John‘s family announced the day before that he has decided to halt all medical treatment.

“Senator John Sidney McCain III died at 4:28pm on August 25, 2018. With the Senator when he passed were his wife Cindy and their family. At his death, he had served the United States of America faithfully for sixty years,” John‘s office said in an official statement.

The 81-year-old politician and war hero has been battling the disease for over a year but his family says he is now discontinuing medical treatment.

“Last summer, Senator John McCain shared with Americans the news our family already knew: he had been diagnosed with an aggressive glioblastoma, and the prognosis was serious. In the year since, John has surpassed expectations for his survival. But the progress of disease and the inexorable advance of age render their verdict. With his usual strength of will, he has now chosen to discontinue medical treatment,” the McCain family said in a statement.

They continued, “Our family is immensely grateful for the support and kindness of all his caregivers over the last year, and for the continuing outpouring of concern and affection from John’s many friends and associates, and the many thousands of people who are keeping him in their prayers. God bless and thank you all.”

Our thoughts are with John and his family during this difficult time.

Read the McCain family’s entire statement below…

My family is deeply appreciative of all the love and generosity you have shown us during this past year. Thank you for all your continued support and prayers. We could not have made it this far without you – you've given us strength to carry on. pic.twitter.com/KuAQSASoa7